﻿#gobang {
    display: block;
    margin: 50px auto;
    box-shadow: -2px -2px 2px #EFEFEF, 5px 5px 5px #B9B9B9;
}
.game {
    padding-top: 50px;
}
.game .box-bg {
      /*filter: alpha(opacity=30);
    opacity: .3;
    background-color: #000;
    position: absolute;
    z-index: 0;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;*/
}